Flushing system



April 10, 1928. 1,665,777

' v c. FABIAN musnme SYSTEM Filed Auz.10, 1927 Inventor:

4 Charles Fazia'n y Alto/"726) Patented Apr. 10, 1928.

UNITED STATES PATENT OFFICE.

CHARLES FABIAN, OI AUCKLAND, NEW ZEALAND, .ASSIGNOR TO ROSS GOULDLIMITED, 0F AUCKLAND, NEW ZEALAND.

FLUSHING SYSTEM.

Application filed August 10, 1927, Serial N0. 212,051, and in NewZealand August 24, 1926.

This invention has been devised with the object of providing improvedflushing means that ensure a rapid and silent flush, and also a completeflush of the cisterns contents before being shut off.

These means are designed to be controlled by a flushing valve whichseats itself over the discharge orifice to seal it and is maintained insuch position by the air suction when the cistern fills. Such seal isthen broken through lifting the valve slightlyby special operating meansprovided, so that the valve rises in the cistern and allows the flush totake place, and at the close of the flush the valve is drawn back on toits seat. The operating means are of special design adapted to lift andfree the flushing valve, and then to automatically return to theoperative position on the valve falling and the cistern filling again.

The invention is illustrated in the accompanying drawings and will behereinafter fully described in relation to such drawings, in whichFigure 1 is a sectional side elevation of a cistern with the fittings inposition therein.

Figure 2 is a sectional end elevation of the cistern showing thefittings therein, but with certain parts removed for the purpose ofclearness of illustration.

Figure 3 is a detail view on an enlarged scale, of the flushing valveand its seat (which are shown in section) and of the valve liftinglever, shown in elevation.

In this invention, the cistern A is provided with the tubular dischargefitting B opening through its bottom, and to the lower end of which thedown pipe C is connected. This fitting is made with a valve seat 7)around its upper end and a flushing valve D is provided to fit over suchseat to close the discharge outlet. This valve D on its underside has arubber ring (Z secured thereon, which ring is adapted to seat itselfwith in the valve seat I) and make an effectual water and air tightjoint therewith.

The flushing valve D is fixed to a vertical hollow rod E passing throughit, and the lower end of this rod is guided within a bearing F arrangedin the fitting B while its upper end passes through the top of a guideframe G that is fixed to or made in one with the fitting B. This rod, bybeing thus mounted, therefore keeps the flushing valve in position overthe outlet of the fitting B and permits of it rising and falling to openand close the outlet. The upward movement of the flushing valve iscontrolled by a suitable stop, as for instance the stop 6 fixed on thebottom end of the rod E and adapted to engage the bearing F when the rodlifts far enough to give the required full discharge clearance betweenthe float valve and its seat 6.

The upper end of the rod E is provided with an enlarged head or collar Hfixed thereon.

A lever arm J is provided and pivoted in an extension G from the top ofthe frame Gr. The inner end of this lever extends horizontally and isadapted to fit beneath the collar H, while its outer end is'curveddownward in the cistern and has a float 'K secured thereto. This floatK, when the cistern is charged with water, is designed by its buoyancyto keep the lever in such position as to cause its inner end to extendhorizontally, and to return itto such position should the inner end belifted. Such inner end is constructed, as shown in Figure 3, with itsextremity formed as a pawl J that is pivoted to the main part in such amanner that it may turn freely in an upward direction but is keptuniform with the main portion by reason of its weight and kept fromturning downward.

This lever pawl end J engages beneath the collar H of the valve rod Ewhen such rod is in its lowered position and the valve D is upon itsseat, and on an upward movement being given the lever, is designed tolift the rod slightly and then pass up beyond such collar H.

For lifting this lever J in such manner and then freeing it so that itmay drop again, an actuating lever M is provided and pivoted to extendtransversely across the top of one edge of the cistern, as by beingmounted on an upward extension G of the frame Gr. The outer end of thisoperating lever has the ordinary pull chain attached to it. Its innerend has a bar N fixed to it to extend downward and such bar is formedwith a slot 11 extending longitudinally and through which slot the innerend of the lever J passes loosely. This slot is made of such a length asto provide that when the inner end of the lever M is raised, the lowerend of the slot will engage the lever J and lift it in the mannerrequired, and then when the pull on the operation. The slot in theconnecting bar outer end of the lever M is released, the inner end Willbe free to fall by its own weight, the slot passing idly over the leverJ without moving it.

In the operation of the invention, the cistern being empty, the flushingvalve will seat itself on the outlet and make an airtight jointtherewith and will maintain its seat as the cistern fills by reason ofthe air suction beneath it. lVhen a flush is to be effected, the lever Mis operated and this, by lifting the lever J, causes its pawl end J toengage beneath the collar H of the valve rodE and to raise such rodsufficiently to break the seal of the flushing valve D upon its seat 5before passing to above the rod end. The seal then being broken, thevalve D will rise in the water to the limit provided for, therebyopening the discharge to its full. As the discharge finishes, theflushing valve is drawn down with the rush of the water so that itre-seats itself upon the seat I; to seal the opening and allow thecistern to refill. Any air suck, and the attendant noise as the flushfinishes, are obviated by having the rod E hollow throughout its length.

Meanwhile the lever J, having been raised, is retained in the raisedposition by the dropping of its float end with the lowering of the Waterlevel, as the discharge commences.

It remains in such position until the cistern is again about full andhas its inner end lowered with the rise in the water level until itreaches its normal position, the pawl end J passing freely over thecollar H of the valve rod E which has previously dropped, andpositioning itself again beneath such collar ready for the next flushingN allows the pull on the leverM being released as soon as the flushcommences fully,

the float K being properly adjusted in its level to fall immediately thewater level begins to drop.

The Water supply to the cistern is controlled in the usual way through afloat governed valve 0 of well known type, and combined with this valveis a silencer device P.

neath such head and to lift the rod when such lever end is raised, afloat upon the outer end of such lever, an operating lever mounted onthe cistern, and a connection between the operating lever and the innerend of the lifting lever.

2. In a flushing system according to claim 1, a connection betweenthe'said operating lever and the lifting level, such connectionconsisting of a bar depending from one end of the operating lever andhaving a slot extending longitudinally therein through which the saidlifting lever passes loosely.

3. In a flushing system according to claim 1, a guide frame for theflushing valve rod and through which it may move longitudinally,constructed with extensions for pivoting the respective lifting leverand the operating lever thereon.

In testimony whereof, I aiiix my signature.

CHARLES FABIAN.

